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X-37B No. 2 F2

Re-entered 7 May 2017

X-37B No. 2 F2 (NORAD 40651, COSPAR 2015-025A) was a US satellite that re-entered Earth's atmosphere on 7 May 2017, launched on 20 May 2015 on the X-37B No. 2? mission. It was operated by AFRCO as part of the X37 programme. The spacecraft was built by BOHB on the X-37 bus, with a mass of 5,000 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

2015
launched
2017
re-entered
2
years on orbit
5,000
kg mass

Lifecycle

Launched20 May 2015 · on the X-37B No. 2? mission
Operational7 May 2017 · entered service
Retired7 May 2017 · end of operational service
Re-entered7 May 2017 · atmospheric re-entry — object destroyed

Specifications

NORAD ID40651
COSPAR2015-025A
TypeSatellite
OperatorAFRCO
Country / StateUS
ManufacturerBOHB
BusX-37
Mass5,000 kg
ProgrammeX37
CategoryTECH*
OrbitLEO (LLEO/I)
Altitude309 × 322 km
Inclination38.0°

Frequently asked questions

What happened to X-37B No. 2 F2?

X-37B No. 2 F2 re-entered Earth's atmosphere on 7 May 2017, ending a mission that began with its launch in 2015. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did X-37B No. 2 F2 re-enter the atmosphere?

X-37B No. 2 F2 re-entered on 7 May 2017, according to Orbital Radar's historical catalogue records.

Who operated and built X-37B No. 2 F2?

X-37B No. 2 F2 was operated by AFRCO and built by BOHB (US).

Launched together

Unix Space Server LangleyRe-entered 2023Optical CubeSat 1Re-entered 2022ParkinsonSat-1Re-entered 2021BRICSat-PRe-entered 2024Optical CubeSat 2Re-entered 2023GEARRS-2Re-entered 2022Optical CubeSat 3Re-entered 2023AC-8aRe-entered 2021
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.